30921R Troy-Bilt Lawn Tractor Accessories - Overview

This OEM Top Locknut measures 5/16x18, is made of metal, and it isused to secure parts in place and prevent backing out from vibration. Replacing this part varies in difficulty depending on the part it is securing and the equipment in question, but it is generally an easy job according to our customers. Installation requires a wrench or socket.

This is an authentic replacement part supplied from original equipment manufacturer. It is a piece of standard hardware which is used on a variety of lawn and garden equipment. It has multiple applications based on your equipment. Make sure to check appropriate diagrams for correct use and location of this nut. Please note you would need a wrench to complete this repair.